XML 114 R86.htm IDEA: XBRL DOCUMENT
v3.20.4

Significant and Subsequent Events - Asset Acquisitions (Details) - Keephills 3 - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Oct. 01, 2019
Investment [Line Items] |  |
Working capital |  | $ 11
Asset Acquisition, Asset, Property, Plant And Equipment |  | 308
Property, plant and equipment | $ 308 |
Other assets |  | 3
Other liabilities |  | (2)
Decommissioning and other provisions |  | (19)
Total acquisition cost |  | $ 301

X
- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2019-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfInvestmentPropertyLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Asset Acquisition, Asset, Property, Plant And Equipment + References No definition available. + Details
Name: | tac_AssetAcquisitionAssetPropertyPlantAndEquipment
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Assets Acquired and Liabilities Assumed, Net + References No definition available. + Details
Name: | tac_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Assets, Other + References No definition available. + Details
Name: | tac_AssetAcquisitionAssetsOther
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Asset Acquisition, Liabilities, Other + References No definition available. + Details
Name: | tac_AssetAcquisitionLiabilitiesOther
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition, Provision For Decommissioning, Restoration And Rehabilitation Costs + References No definition available. + Details
Name: | tac_AssetAcquisitionProvisionForDecommissioningRestorationAndRehabilitationCosts
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Asset Acquisition, Working Capital + References No definition available. + Details
Name: | tac_AssetAcquisitionWorkingCapital
Namespace Prefix: | tac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | tac_AssetAcquisitionAxis=tac_Keephills3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |